Unlike most other security suites (whose origins tend to be in the antivirus market), CheckPoint’s ZoneAlarm started out as a firewall and expanded from there. And it shows.
There were problems in testing though, and ZoneAlarm Internet Security Suite didn’t entirely protect our sample PC from an outside scan. Neither did it entirely hide the closed channels. According to AV-Test.org, the XP version doesn’t exhibit this problem.
Backed up by Kaspersky’s engine, ZoneAlarm Internet Security Suite's malware detection rate was high – around 96 percent – but it did lag on scan speed. Indeed, at just 3.62 megabytes per second (MBps), it produced one of the slowest test times of any package.
ZoneAlarm Internet Security Suite's options and interface for antivirus scanning are anemic. You can't decide whether to scan within archives for a user-started scan or for an automatic, on-access scan. You can't decide much of anything else, either.
The firewall itself is extensive and would be a good purchase in its own right. As a complete suite, though, ZoneAlarm Internet Security Suite is full of holes.